Fix typo in tutorial
diff --git a/Doc/tutorial/controlflow.rst b/Doc/tutorial/controlflow.rst
index 0616613..3d3af4e 100644
--- a/Doc/tutorial/controlflow.rst
+++ b/Doc/tutorial/controlflow.rst
@@ -167,7 +167,7 @@
 iteration of the loop::
 
     >>> for num in range(2, 10):
-    ...     if x % 2 == 0:
+    ...     if num % 2 == 0:
     ...         print("Found an even number", num)
     ...         continue
     ...     print("Found a number", num)